<template>
  <div>
    <bread-nav></bread-nav>
    <!-- 卡片视图区 -->
    <el-card>
      <!-- 提示区 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条区 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        class="m-fontsize"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        class="demo-ruleForm"
        label-position="top"
      >
        <!-- tab栏区域 -->
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTabsLeace"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                expand-trigger="hover"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <!-- 渲染 表单item项  -->
            <el-form-item
              v-for="item in manyTableData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <!-- 复选框组 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <!-- 静态属性  -->
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTabelDate"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action 图片上传地址 要完整地地址-->
            <!-- on-preview 预览事件 -->
            <el-upload
              :action="uploaUrl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headersObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
             <quill-editor v-model="addForm.goods_introduce"></quill-editor>
             <!-- 添加商品按钮 -->
             <el-button type="primary" class="mt-20" @click="addGoodShop">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 图片预览 -->
    
<el-dialog
  title="图片预览"
  :visible.sync="previewVisible"
  width="50%"
>
  <el-image :src="previewPath" alt="商品图片"></el-image>

</el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
// 这里可以导入其他文件（比如：组件，工具js，第三方插件js，json文件，图片文件等等）
import BreadcrumbNavigation from '../breadcrumbNavigation/BreadcrumbNavigation.vue';
export default {
  components: {
    'bread-nav': BreadcrumbNavigation,
  },
  // 定义属性
  data() {
    return {
      activeIndex: '0',
      // 添加商品的表单
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属的分类数组
        goods_cat: [],
        // 图片的数组
        pics: [],
        // 商品详情描述
        goods_introduce:'',
        attrs:[] // 商品的参数
      },
      // 表单验证规则
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' },
        ],
      },
      // 所有商品分类
      cateList: [],
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
      },
      manyTableData: [], // 动态参数
      onlyTabelDate: [], // 静态属性列表
      uploaUrl: 'http://127.0.0.1:8888/api/private/v1/upload', // 上传图片地址
      headersObj: {
        Authorization: window.sessionStorage.getItem('token'),
      }, //图片上传地请求头对象
      previewVisible:false,
      previewPath:''
    };
  },
  // 生命周期 - 创建完成（可以访问当前this实例）
  created() {
    this.getCateList();
  },
  // 计算属性，会监听依赖属性值随之变化
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
  // 监控data中的数据变化
  watch: {},
  // 方法集合
  methods: {
    // 获取所有商品分类数据
    async getCateList() {
      const { data: res } = await this.$http.get(`categories`);
      if (res.meta.status !== 200)
        return this.$message.console.error('获取所有商品分类数据失败！');
      this.cateList = res.data;
    },
    // 商品分类级联选择器
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
      }
    },
    // 监听切换
    beforeTabsLeace(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品的分类 !');
        return false;
      }
    },
    // 切换tabs 获取数据
    async tabClicked() {
      //  访问动态参数面板
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' },
          }
        );

        if (res.meta.status !== 200) {
          return this.$message.error(res.meta.msg);
        }

        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(',');
        });
        this.manyTableData = Object.freeze(res.data);
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error(res.meta.msg);
        }
        this.onlyTabelDate = Object.freeze(res.data);
      }
    },
    // 处理图片预览
    handlePreview(file) {
      this. previewPath = file.response.data.url
      this.previewVisible = true
    },
    // 处理移除图片
    handleRemove(file) {
      /**获取要删除的图片的临时路径 */
      const filePath = file.response.data.tmp_path;
      /**从pics数组找到图片对应得索引 */
      const i = this.addForm.pics.findIndex((x) => x.pics===filePath);
      this.addForm.pics.splice(i, 1);
    },
    // 监听图片上传成功
    handleSuccess(response) {
      // response 服务器返回的数据
      /***
       * 拼接得到图片对象信息
       *将图片对象信息push到pics数组
       */
      const picsInfo = { pic: response.data.tmp_path };
      this.addForm.pics.push(picsInfo);
    },
    // 添加商品
    addGoodShop(){
      this.$refs.addFormRef.validate(async vali=>{
        if(!vali){
          this.$message.error('请填写必要的表单项！')
        }
        // 执行添加
      const form =  _.cloneDeep(this.addForm)
      form.goods_cat=  form.goods_cat.join(',')
      /**
       *  manyTableData: [], // 动态参数
       *  onlyTabelDate: [], // 静态属性列表
       */
        this.manyTableData.forEach(e=>{
          const newInfo = {
            attr_id:e.attr_id,
            attr_value:e.attr_vals.join(',')
          }
          this.addForm.attrs.push(newInfo)
        })
        this.onlyTabelDate.forEach(e=>{
          const newInfo = {
            attr_id:e.attr_id,
            attr_value:e.attr_vals
          }
           this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        // 发起请求
      const {data:res} = await this.$http.post('goods',form)
      if(res.meta.status !== 201){
        return this.$message.error('添加上商品失败！')
      }
     await this.$message.success('添加商品成功！')
      this.$router.push('/goods')
      })
    }
  },
  // 生命周期 - 挂载完成（可以访问DOM元素）
  mounted() {},
};
</script>

<style lang='less' scoped>
::v-deep .el-step__title {
  font-size: 13px;
}
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
</style>